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A3946KLB-T Datasheet(PDF) 9 Page - Allegro MicroSystems |
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A3946KLB-T Datasheet(HTML) 9 Page - Allegro MicroSystems |
9 / 13 page 9 Worcester, Massachusetts 01615-0036 (508) 853-5000 115 Northeast Cutoff, Box 15036 www.allegromicro.com 3946 Half-Bridge Power MOSFET Controller VREG C BOOT +VBAT +5 Vref Charge Pump BOOT GH S GL LGND VREG CP1 CP2 Charge Pump RESET Protection VREG Undervoltage Overtemperature UVLOBOOT IN2 ~FAULT DT Control Logic Turn-On Delay IN1 VREF Bootstrap UVLO 10 k Ω C REG C1 0.47 μF R GATE I LIM High Side Driver Low Side Driver C2 10 μF 0.1 uF VREF 10 μF IRF2807 IRF2807 0.47 μF 33 Ω External +5 V Slow Decay Forward VREF Forward Slow Decay DC Motor #1 DC Motor #2 200 k Ω M DC Motor #2 M DC Motor #1 PGND P L P L P L L L L P P 200 k Ω R GATE 33 Ω P L Diagram B. Independent drivers. One high-side drive and one low-side drive. |
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